A privy council is a body that advises the head of state of a nation, typically, but not always, in the context of a monarchic government. The word "privy" means "private" or "secret"; thus, a privy council was originally a committee of the monarch's closest advisors to give confidential advice on state affairs.

Judicial Committee of the Privy Council

The Judicial Committee of the Privy Council (JCPC) is the highest court of appeal for certain British territories and Commonwealth countries. Established on 13 August 1833 to hear appeals formerly heard by the King-in-Council, the Privy Council formerly acted as the court of last resort for the entire British Empire, and continues to act as the highest court of appeal for several independent Commonwealth nations, the Crown Dependencies, and the British Overseas Territories.

Privy Council of the United Kingdom

Her Majesty's Most Honourable Privy Council, usually known simply as the Privy Council of the United Kingdom or just the Privy Council, is a formal body of advisers to the Sovereign of the United Kingdom. Its membership mainly comprises senior politicians, who are current or former members of either the House of Commons or the House of Lords.

Privy Council of England

The Privy Council of England, also known as HisMajesty's Most Honourable Privy Council, was a body of advisers to the sovereign of the Kingdom of England. Its members were often senior members of the House of Lords and the House of Commons, together with leading churchmen, judges, diplomats and military leaders.

Supreme Council of State of Siam

The Supreme Council of State of Siam was an advisory and legislative council established by His Majesty King Prajadhipok of Siam that existed from 1925 to 1932. The Eton and Sandhurst educated monarch wished to create a council similar to a cabinet, where the most important government officials could meet to decide on state affairs. The Council was founded on 28 November 1925 by Royal Command. Prajadhipok only succeeded to the throne three days earlier, after the death of his brother Vajiravudh on the 25 November 1925.